Mini Lime-Syrup Sponges

This is really just the miniaturization of the lemon-syrup sponge. You could do them in lemon here, too, or use a mixture of ordinary orange juice and lime juice to evoke the wonderful acerbity of Seville oranges. (Or indeed use those when in season.) It doesn’t matter what the citrus is: there is just something about these small-scale, perfectly formed loaves that make them particularly appealing.